A new Apple support document lays out what to look for in third-party hardware to make use of the new fast charging feature for iPhone 8 and iPhone X.

Whoosh! Screen Cleaner

As we noted the day after Apple’s September event, the iPhone 8 and iPhone X both support some new ways to charge up your device. While more attention is focused on the new iPhones supporting wireless charging (although it’s quite slow), a potentially more handy feature for many will be fast charging support. With the right USB-C power adapter and USB-C to Lightning cable, users can get a 50% charge in 30 minutes.

Spotted by MacRumors, Apple has shared a new support document detailing what hardware is needed to take advantage of fast charging. While most of the information isn’t new, the addition of details on third-party chargers is unusual (and helpful) for Apple.

Apple 29W, 61W, or 87W USB-C Power Adapter

A comparable third-party USB-C power adapter that supports USB Power Delivery (USB-PD)